Electric motors

Details Electric motors Electric motors

1975-05-06

1977-03-22

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310198, 310202, 318224R, H02K 300

Patent

active

040139093

ABSTRACT:
A pole-amplitude modulation type, speed-changing, 3-phase alternating current electric motor or generator having a composite stator winding comprising two 3-phase winding components. The 3-phase winding components are in themselves pole-amplitude modulation pole-changing, 3-phase windings, but may possess unsuitable electrical characteristics for practical use. The two components are combined the first component being wound on the first half of the stator and the second component being wound on the second half of the stator whereby the composite stator winding is given acceptable electrical characteristics, particularly in respect of harmonic content, or sub-harmonic content, of MMF waveform.

REFERENCES:
patent: 3197686 (1965-07-01), Rawcliffe
patent: 3233159 (1966-02-01), Rawcliffe
patent: 3299337 (1967-01-01), Rawcliffe
patent: 3335307 (1967-08-01), Levy
patent: 3432707 (1969-03-01), Peters
patent: 3476964 (1969-11-01), Willyoung
patent: 3515922 (1970-06-01), Fong
patent: 3622823 (1971-11-01), Broadway
patent: 3673477 (1972-06-01), Broadway
patent: 3794870 (1974-02-01), Broadway

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